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22C-B090A103
22C-B090A103
22C-B090A103什么是非线性器件?
非线性元件是指其电特性不符合线性关系的电子元件。通常情况下,电子元件的电流与电压之间存在线性关系,即符合欧姆定律,但是某些元件的电流与电压之间并不符合线性关系,这些元件就被称为非线性元件。
正弦PWM(SPWM,Sine wave Pulse Width Modulation)也是一种常用的PWM技术。它的主要特点是生成的PWM信号的调制波形为正弦波形,可以减小输出信号的谐波含量,降低电磁干扰,并提高输出波形的质量和稳定性。
在正弦PWM技术中,调制波形为正弦波,而载波信号为方波。 通过将正弦波和方波进行比较,可以得到PWM信号的占空比。 具体来说,当正弦波的幅值大于方波时,PWM信号输出高电平; 当正弦波的幅值小于方波时,PWM信号输出低电平。 通过不断改变正弦波的频率和幅值,可以控制PWM信号的输出电压和频率。
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